Influence of DGKH variants on amygdala volume in patients with bipolar affective disorder and schizophrenia

  • S. Kittel-Schneider
  • , T. Wobrock
  • , H. Scherk
  • , T. Schneider-Axmann
  • , S. Trost
  • , D. Zilles
  • , C. Wolf
  • , A. Schmitt
  • , B. Malchow
  • , A. Hasan
  • , M. Backens
  • , W. Reith
  • , P. Falkai
  • , O. Gruber
  • , A. Reif

Research output: Contribution to journalArticlepeer-review

Abstract

The diacylglycerol kinase eta (DGKH) gene, first identified in a genome-wide association study, is one of the few replicated risk genes of bipolar affective disorder (BD). Following initial positive studies, it not only was found to be associated with BD but also implicated in the etiology of other psychiatric disorders featuring affective symptoms, rendering DGKH a cross-disorder risk gene. However, the (patho-)physiological role of the encoded enzyme is still elusive. In the present study, we investigated primarily the influence of a risk haplotype on amygdala volume in patients suffering from schizophrenia or BD as well as healthy controls and four single nucleotide polymorphisms conveying risk. There was a significant association of the DGKH risk haplotype with increased amygdala volume in BD, but not in schizophrenia or healthy controls. These findings add to the notion of a role of DGKH in the pathogenesis of BD.

Original languageEnglish
Pages (from-to)127-136
Number of pages10
JournalEuropean Archives of Psychiatry and Clinical Neuroscience
Volume265
Issue number2
DOIs
Publication statusPublished - Mar 2015
Externally publishedYes

Keywords

  • Amygdala
  • Bipolar disorder
  • DGKH
  • Schizophrenia
  • Structural MRI

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